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USN-928-1: Sudo vulnerability

15 April 2010

Sudo vulnerability

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Releases

Packages

Details

Valerio Costamagna discovered that sudo did not properly validate the path
for the 'sudoedit' pseudo-command when the PATH contained only a dot ('.').
If secure_path and ignore_dot were disabled, a local attacker could exploit
this to execute arbitrary code as root if sudo was configured to allow the
attacker to use sudoedit. By default, secure_path is used and the sudoedit
pseudo-command is not used in Ubuntu. This is a different but related issue
to CVE-2010-0426.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 9.10
Ubuntu 9.04
Ubuntu 8.10
Ubuntu 8.04
Ubuntu 6.06

In general, a standard system upgrade is sufficient to effect the
necessary changes.